Date: Wed, 13 Apr 2011 22:37:28 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r220611 - head/sys/fs/nfsclient Message-ID: <201104132237.p3DMbS6q013394@svn.freebsd.org>
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Author: rmacklem Date: Wed Apr 13 22:37:28 2011 New Revision: 220611 URL: http://svn.freebsd.org/changeset/base/220611 Log: Add VOP_PATHCONF() support to the experimental NFS client so that it can, along with other things, report whether or not NFS4 ACLs are supported. MFC after: 2 weeks Modified: head/sys/fs/nfsclient/nfs_clvnops.c Modified: head/sys/fs/nfsclient/nfs_clvnops.c ============================================================================== --- head/sys/fs/nfsclient/nfs_clvnops.c Wed Apr 13 22:16:52 2011 (r220610) +++ head/sys/fs/nfsclient/nfs_clvnops.c Wed Apr 13 22:37:28 2011 (r220611) @@ -83,6 +83,7 @@ __FBSDID("$FreeBSD$"); #define FALSE 0 extern struct nfsstats newnfsstats; +extern int nfsrv_useacl; MALLOC_DECLARE(M_NEWNFSREQ); /* @@ -103,6 +104,7 @@ static vop_lookup_t nfs_lookup; static vop_create_t nfs_create; static vop_mknod_t nfs_mknod; static vop_open_t nfs_open; +static vop_pathconf_t nfs_pathconf; static vop_close_t nfs_close; static vop_access_t nfs_access; static vop_getattr_t nfs_getattr; @@ -151,6 +153,7 @@ struct vop_vector newnfs_vnodeops = { .vop_mkdir = nfs_mkdir, .vop_mknod = nfs_mknod, .vop_open = nfs_open, + .vop_pathconf = nfs_pathconf, .vop_print = nfs_print, .vop_read = nfs_read, .vop_readdir = nfs_readdir, @@ -3244,3 +3247,115 @@ nfs_setacl(struct vop_setacl_args *ap) } return (error); } + +/* + * Return POSIX pathconf information applicable to nfs filesystems. + */ +static int +nfs_pathconf(struct vop_pathconf_args *ap) +{ + struct nfsv3_pathconf pc; + struct nfsvattr nfsva; + struct vnode *vp = ap->a_vp; + struct thread *td = curthread; + int attrflag, error; + + if (NFS_ISV34(vp)) { + error = nfsrpc_pathconf(vp, &pc, td->td_ucred, td, &nfsva, + &attrflag, NULL); + if (attrflag != 0) + (void) nfscl_loadattrcache(&vp, &nfsva, NULL, NULL, 0, + 1); + if (error != 0) + return (error); + } else { + /* For NFSv2, just fake them. */ + pc.pc_linkmax = LINK_MAX; + pc.pc_namemax = NFS_MAXNAMLEN; + pc.pc_notrunc = 1; + pc.pc_chownrestricted = 1; + pc.pc_caseinsensitive = 0; + pc.pc_casepreserving = 1; + error = 0; + } + switch (ap->a_name) { + case _PC_LINK_MAX: + *ap->a_retval = pc.pc_linkmax; + break; + case _PC_NAME_MAX: + *ap->a_retval = pc.pc_namemax; + break; + case _PC_PATH_MAX: + *ap->a_retval = PATH_MAX; + break; + case _PC_PIPE_BUF: + *ap->a_retval = PIPE_BUF; + break; + case _PC_CHOWN_RESTRICTED: + *ap->a_retval = pc.pc_chownrestricted; + break; + case _PC_NO_TRUNC: + *ap->a_retval = pc.pc_notrunc; + break; + case _PC_ACL_EXTENDED: + *ap->a_retval = 0; + break; + case _PC_ACL_NFS4: + if (NFS_ISV4(vp) && nfsrv_useacl != 0 && attrflag != 0 && + NFSISSET_ATTRBIT(&nfsva.na_suppattr, NFSATTRBIT_ACL)) + *ap->a_retval = 1; + else + *ap->a_retval = 0; + break; + case _PC_ACL_PATH_MAX: + if (NFS_ISV4(vp)) + *ap->a_retval = ACL_MAX_ENTRIES; + else + *ap->a_retval = 3; + break; + case _PC_MAC_PRESENT: + *ap->a_retval = 0; + break; + case _PC_ASYNC_IO: + /* _PC_ASYNC_IO should have been handled by upper layers. */ + KASSERT(0, ("_PC_ASYNC_IO should not get here")); + error = EINVAL; + break; + case _PC_PRIO_IO: + *ap->a_retval = 0; + break; + case _PC_SYNC_IO: + *ap->a_retval = 0; + break; + case _PC_ALLOC_SIZE_MIN: + *ap->a_retval = vp->v_mount->mnt_stat.f_bsize; + break; + case _PC_FILESIZEBITS: + if (NFS_ISV34(vp)) + *ap->a_retval = 64; + else + *ap->a_retval = 32; + break; + case _PC_REC_INCR_XFER_SIZE: + *ap->a_retval = vp->v_mount->mnt_stat.f_iosize; + break; + case _PC_REC_MAX_XFER_SIZE: + *ap->a_retval = -1; /* means ``unlimited'' */ + break; + case _PC_REC_MIN_XFER_SIZE: + *ap->a_retval = vp->v_mount->mnt_stat.f_iosize; + break; + case _PC_REC_XFER_ALIGN: + *ap->a_retval = PAGE_SIZE; + break; + case _PC_SYMLINK_MAX: + *ap->a_retval = NFS_MAXPATHLEN; + break; + + default: + error = EINVAL; + break; + } + return (error); +} +
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